Grease-pump



I V. BOSER.

GREASE PUMP. APPUCATIOH FILED SEPT.2I, 1920.

Patented June 28, 1921,

WHEEK M/ m Be it 'known that I,

UNITED STATES P-AT-ENT OFFICE.

JEREMIAH v. 'nosnn. or NASHVILLE, mnrmnssnn, ASSIGNOR or ONE-HALF TO n.nnnnennmm, or 1vasnvrnms, TENNESSEE.

GREASE-rum.

T 0 all whom itmay concern JEREMIAH V. Rosnn, a citizen of the UnitedStates, residing at Nashville, in the county of Davidson and State ofTennessee, have invented certain new and useful Improvements in Grease-Pumps; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The object of the invention is to provide a relatively simpleandefiicient means for applying heav oils and grease to machinery as foreXamp e in garages, machineshops and the like and more particularly-toprovide a device for this purpose which maybe applied directly to thebarrel or drum containing the oil or grease so that the transfer of thelubricant may be directly from the original container to the receptaclesuch as the oil reservoir or grease cup of the machine or vehicle towhich it is to belapplied, and in that connection to provide meanswhereby the quantity of oil or grease supplied may be graduatedormeasured in quantity to adapt it for use when the'lubricant is beingsold by measureor weight; and with these objects in view, the inventionconsists in a construction and combination of parts of which a preferredembodiment is shown in the drawings, wherein- Figure 1 is a sectionalview of a pump,

Fig. 2 is a detail view of the upper end of the discharge tube.

The apparatus is preferably carried by a base plate 10 and consistsessentially of cylinder 11 in which operates a piston or plunger 12actuated by a rod 13 having a rack 1 1 for engagement by a pinion 15,and a discharge tube 16 having valved communication with the lower endof the cylinder which is adapted to be suspended in a barrel or drum bysecuring the base plate over a suitable opening such as a bung hole inthe wall or head of the barrel or drum, the cylinder being supportedfrom the base plate by means of a suitable hanger 17. The guide 18 inwhich the rack operates rises from the base plate and may be suitablybraced as shown at 19, the pinion 15 being carried by a spindle 20 towhich is attached an operating crank 21.

The valve casing 22 which serves to connect the lower ends of thecylinder and dis- Specification of Letters Patent.

Patented June 28, 1921.

. Application filedfSeptember 21,1950. aa1' .411,'713. I

' charge pipeand into suitable'fopenings of which the lower extremitiesof said parts maybeth'readed as shown in the drawing, is provided withan inlet port'23 about which is'formed a valve se2tt'23, andthedischarge 'p'ort25 about which is formed a valveseat 25. The upperendlof a frusto conical valve24l cooperates with the seat 25 to closethe outlet port 25 and the lower end of thevalve cooperates with theseat 23 to close the inlet port 23. Upon a suction stroke of the pistonor plunger'in the cylinder 11, the valve is seated at 25 to permit ofthe induction of oil or grease into the valve casingjand cylinder,whereas 'upon the discharge stroke of the piston or plunger, thevalvecloses the inletp'ort and the out-V let portis open to permit ofthe passage of thecontentsof the valve casing andcylinder into andthr'oughthe discharge pipe16. Connected with theupper end of thevalvestem27 above the stuiiing box 28 in the upper end of the discharge pipeand through which said stem extends,.is attached a grip or handle 29 .topermit of the positive manual opening and "closing of the inlet anddischarge ports, so that the disadvantages at tendant upon the sluggishmovement or sticking of the valve maybe entirely overcome and the properoperation ofthe pump assured. p w

The valve 24: being of substantially frusto-conical shape permits theuse of the same with valve seats of difi'erent sizes, as for instance,the valve seat 25 is much smaller than the valve seat 23 so as to agreewith the size of the outlet port and the inlet port and it is desirableto have the latter larger than the outlet tube or port, so that thechamber 22 will quickly fill when the inlet port is opened.

Communicating with the discharge pipe near its upper end by means of asuitable nipple 30 is a delivery tube or hose 31 which may be flexibleand directed as required to discharge the lubricant into the bearing orreceptacle to which it is to be applied.

Any suitable means may be provided in connection with the apparatus formeasuring or determining the quantity of discharge due to the movementof the piston or plunger, when a quantitative delivery is desirable, asfor example by providing the piston rod or rack forming a continuationthereof with graduations as indicated at 32.

From the foregoing description itwill be noted that the pump is soconstructed as to provide foremanual opening and closing of the ports soas, to enablethe operatortofurther provides for a more accurate measurement of the discharge from the pump,

whenthe apparatus is to beusedcas a dispensing means 'for a marketedcommodity."

Having thus described the invention, what,

and exposed manually If claim is 1. A pump 'for the purpose indicatedhav- 7 ing a cylinder and piston operating therein,

means for actuating the piston, a discharge tube, andafrustoconicalvalve'ifor respectively controlling. the inlet to thecylinder and the discharge through said tube, said 1n} let to thecylinder being of a larger dlame-j telthan the tube and closed bytheilarge end of thevalvef 2'. A'pumpjfor the purpose indicated hav-jing a cylinder and a piston, meansfor actu ating the piston, a dischargetube, astem extending through the 3 discharge tube and providedexteriorlyfthereof'with agrip or handle, a valve for respectivelycontrolling the inlet'to the cylinder and the discharge through-saidtube, said valve being icarried by said stem. 3; A pump for the purposeindicated having a cylinder and piston, means for actuating thepiston, adischarge tube, a stem extending through the discharge tube and pro- Ivided exteriorly thereof with a grip I or handle, a frusto conicalvalvefor respectively. controlling the inlet to the cylinder andthe'discharge through said tube, said valve be ingcarried by the stem, thesmaller end of the valve cooperating with the discharge discharge ports,

i-ing connecting the cylinder with the discharge tube, said casinghaving inlet and a valve openingi inwardly with relation to the casingand respectively controlling said inletand discharge ports,

the end of the valve cooperating with the inlet portbeing of an area inexcess of the end cooperating with the discharge port, operable meanstor reversing the positions of said valve,

5. grease pump comprising a casing havingan inlet port, a discharge tubein communication with the interior of the case lng andarranged inalinement-with said inlet portfand of a diameter smaller than thediameter of said inlet port,and a fru'sto -coni cal-shaped valve insaidcasing for closing the tube when in one position and "for closing theinlet port when in another position." 6. A grease pump comprising casinghaving an inlet ,port,'"a discharge tube in communication with theinterior of the casing and arranged in alinement withsaid inlet port, aforce pump connectedto the casing, a valve in saidcasing for closingthe: tube when in one position and for closing the in-' let port when inanother position, and a stem connected "to the. valve and extendingthrough the tube for moving the valve into either of its positions.

' :In testimony whereof I alfix my signature in presence of twowitnesses;

' Witnesses: i v NELLr 'WnIss, I

RoGnRKINo. i

JERE IAnv; ROSER; j

